My dog won't stop vomiting

My dog has been vomiting everyday for about a month now. Sometimes 2-3 times a day. Wether he's eaten or not. Most of the time he vomits up yellow foam. Others its his food. Ive tried switching to a bland diet of just rice and feeding him plain yogurt with no success. Took him to a vet to do blood work and everything came back good. Nothing showed up on x-rays and gave him dewormers. He continues to vomit and is starting to lose weight. What's going on?

Hello - I don't know, but it doesn't sound as though you ought to stop there with the investigations!  Presumably your vet has asked a lot of questions and established whether vomiting or regurgitation is the issue;  there is a completely different differential (possibilities) list with each so its important to know one from another - and of course, sometimes, it's not obvious.  It's a concern when people say that the bloods were all okay- of course they may have been, but I dont know which tests were done!  Did they include tests for pancreatitis for example, which can cause chronic vomiting?  Finally, not everything shows up on x-rays and sometimes more imaging eg contrast x-rays - can be needed.  I have never heard a colleague say 'I dont know why this dog is losing weight or vomiting so we'll just leave it there;' - I imagine that your vets have a plan as to what to do next.  We would reccommend asking for more details about this and sticking with it (which sounds to be what you're doing) - weight loss and vomiting is serious and it may prove vital to establish a cause.

Meanwhile, repeated vomiting can be risky in itself in terms of dehydration, so depending on the severity, your vet may ask to keep assessing!

Maybe I need to find a different vet because they left the answer to me as "I don't know what's wrong". He's still committing even though he's been able to hold down Rice and yogurt much better. He's still active, just not sure what's going on with him.

I just feel so helpless

I want to send you a hug; it all sounds very stressful, especially at this time of year.  I'm very happy when vets admit to not knowing what is wrong;  this didn't used to be the culture in the UK but things are changing.  For me, 'I don't know' a sign of a clinician wanting to be honest with you.  Bodies are incredibly complex and we won't always know the answer.  Rather, I would reccommend judging vets on how concerned they are to find the right answer and do the right thing for the patient.  'I don't know.... but here's a logical thing to try' or even better, 'I don't know, but I can seek the help of an expert who will be able to help.' Wishing you all the best and please do let us know how you're getting on.